acacia doré (Acacia pycnantha)
Caption: P.H.W.Taubert - Leguminosae (1891) - This image is in the public domain because its copyright has expired.

acacias de tres espinas (Gleditsia triacanthos)
Caption: Herman, D.E., et al. 1996. North Dakota tree handbook. USDA NRCS ND State Soil Conservation Committee; NDSU Extension and Western Area Power Administration, Bismarck. - Non-Copyrighted Image

acacia negra (Gleditsia triacanthos)
Caption: Herman, D.E., et al. 1996. North Dakota tree handbook. USDA NRCS ND State Soil Conservation Committee; NDSU Extension and Western Area Power Administration, Bismarck. - Non-Copyrighted Image

acacia doré (Acacia pycnantha)
Caption: Dipartimento di Scienze della Vita, Università di Trieste - Progetto Dryades - Picture by Andrea Moro - Comune di Calatafini, località Segesta, lungo la strada che conduce all'area archeologica., TP, Sicilia, Italia, - Image licensed under a Creative Commons Attribution Non Commercial Share-Alike 3.0 License